diff options
Diffstat (limited to 'src/odb.c')
| -rw-r--r-- | src/odb.c | 42 |
1 files changed, 42 insertions, 0 deletions
@@ -27,6 +27,8 @@ #include "git/zlib.h" #include "common.h" #include "fileops.h" +#include "hash.h" +#include <stdio.h> struct git_odb { /** Path to the "objects" directory. */ @@ -83,6 +85,46 @@ int git_obj__loose_object_type(git_otype type) return obj_type_table[type].loose; } +static int format_object_header(char *hdr, size_t n, git_obj *obj) +{ + const char *type_str = git_obj_type_to_string(obj->type); + int len = snprintf(hdr, n, "%s %u", type_str, obj->len); + + assert(len > 0); /* otherwise snprintf() is broken */ + assert(len < n); /* otherwise the caller is broken! */ + + if (len < 0 || len >= n) + return GIT_ERROR; + return len+1; +} + +int git_obj_hash(git_oid *id, git_obj *obj) +{ + git_buf_vec vec[2]; + char hdr[64]; + int hdrlen; + + assert(id && obj); + + if (!git_obj__loose_object_type(obj->type)) + return GIT_ERROR; + + if (!obj->data && obj->len != 0) + return GIT_ERROR; + + if ((hdrlen = format_object_header(hdr, sizeof(hdr), obj)) < 0) + return GIT_ERROR; + + vec[0].data = hdr; + vec[0].len = hdrlen; + vec[1].data = obj->data; + vec[1].len = obj->len; + + git_hash_vec(id, vec, 2); + + return GIT_SUCCESS; +} + static int object_file_name(char *name, size_t n, char *dir, const git_oid *id) { size_t len = strlen(dir); |